Just tried with IPad simulator (because I do not have iPhone or IPad ), was not found logout button after I login. Maybe because I use a child theme and set activity as home page, or there are some things I missed.

There are several plugins that should be disabled because it doesn’t work on this theme.

Now the activity as the home page is working, and the logout button is also displayed after login. Another problem is the blog page/tab can not display the list of blog posts. He even displays a list of blogs because I named the page/tab “Blog”. Login form on the front page also does not work: every time I login always redirected to the wp-login.